Ipad Dropbox app cannot open some pdf files
my Ipad Dropbox app cannot open some pdf files. The blue download bar appears and when download is complete, the wheel spins and spins and nothing happens.
Some files are password protected. until recently, the password window would open. Now it does not. The wheel just spins and spins and the file does not open.
AN email attachment (pdf) which I opened in Dropbox on my iPhone opens fine. Files saved in Dropbox from my desktop won't open. This is true for pdf and MSWord files.
I'm running iOS 7.1.2 (11D257)
iPad 2 Wi-Fi, iOS 7.1.2